diff --git a/.hgignore b/.hgignore
index b05525f96..b1f9cbc75 100644
--- a/.hgignore
+++ b/.hgignore
@@ -9,6 +9,7 @@ ReleaseDebug
 DebugFast
 ReleaseDebugStatic
 DebugFastStatic
+external
 
 # Test and application directories
 screenshots